Prostaglandin F2-alpha(PGF-2 alpha) is a stable prostaglandin that stimulates the contraction of uterine and bronchial smooth muscle and produces vasoconstriction (tightening) in some blood vessels. As a pharmaceutical, the generic name of PGF-2 alpha is dinoprost.
  The most common compound on Earth is water. It's formula is H2O, meaning that in one water molecule, there are two hydrogen (H) atoms and one oxygen (O) atom.  Anoth â¦ er common compound is sodium chloride, which most people know as table salt.ydrogen is the most common atom in the universe, and oxygen is the thrid â¦ most common, so water has to be the number one compound.
Concept 1: CHNOPS: The Six Most Abundant Elements of Life. Most biological molecules are made from covalent combinations of six important elements, whose chemical symbols are CHNOPS. Biological molecules, or biomolecules, are built by joining atoms through covalent bonds. Although more than 25 types of elements can be found in biomolecules, six elements are most common.